From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wi0-f179.google.com ([209.85.212.179]:41647 "EHLO mail-wi0-f179.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752450AbaLYPqH (ORCPT ); Thu, 25 Dec 2014 10:46:07 -0500 Received: by mail-wi0-f179.google.com with SMTP id ex7so15709130wid.0 for ; Thu, 25 Dec 2014 07:46:05 -0800 (PST) Message-ID: <549C313A.7090504@gmail.com> Date: Thu, 25 Dec 2014 16:46:02 +0100 From: =?windows-1252?Q?Marek_Kord=EDk?= MIME-Version: 1.0 To: Yinghai Lu , Bjorn Helgaas CC: Gavin Shan , Benjamin Herrenschmidt , "linux-pci@vger.kernel.org" , Alexey Voronkov , David Airlie , Alex Deucher , Richard Yang Subject: Re: Regression: bug 85491: radeon 0000:01:00.0: Fatal error during GPU init References: <1418074683.13358.1.camel@kernel.crashing.org> <20141208233855.GA15713@shangw> <20141220002306.GB30834@google.com> <20141223214106.GA27291@google.com> In-Reply-To: Content-Type: text/plain; charset=windows-1252; format=flowed Sender: linux-pci-owner@vger.kernel.org List-ID: On 12/24/2014 03:29 AM, Yinghai Lu wrote: > On Tue, Dec 23, 2014 at 1:41 PM, Bjorn Helgaas wrote: > >> >> Can you do this so it clips to any upstream bridge, whether it's a host >> bridge or a PCI-to-PCI bridge? It doesn't seem like this has to be >> specific to host bridge windows -- any device below a PCI-to-PCI bridge has >> to use address space forwarded by that upstream bridge. > > ok, please check attached v2. > >> >> I wish this were in generic code. There's nothing architecture-specific >> about the problem, but this patch only fixes things on x86. Can you make a >> similar change in the corresponding code for other arches, as well? > > ok, later after x86. > > Thanks > > Yinghai > I checked (only) v2 of your patch on versions 3.18.0 and 3.18.1. The result of both versions is that booting stops with kernel panic. I don't how to get the full log (there is nothing in journalctl and dmesg after booting some working kernel - maybe if you can give me some hint what to google) so I will attach photo of screen to the bugzilla issue. Marek